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It has a 3.5 mm headphone jack on it. Use that for your headsets.
(If you require Bluetooth... there is a reference to an upgrade to this device series, to add Bluetooth capability. But look first - in the menu settings system on the Garmin device - for Bluetooth options already present, since firmware upgrades are hazardous, and canno/should-not be done if their version is the same as the version already on the device.)